FREMONT, CA – June 2, 2005 – Santur Corporation, a leading manufacturer of highly reliable, cost-effective source laser components for the telecommunications industry, today announced the closing of $16.6 million Series C funding, led by existing investors, including Menlo Ventures, Sequoia Capital, Thomas Weisel Venture Partners, VantagePoint Venture Partners and Lighthouse Capital.

"Santur’s excellent customer traction and revenue with Tier 1 Global OEMS, the strongest and most reliable tunable laser technology, and proven management team gives us great confidence in this business and team.” said Pierre Lamond, Partner at Sequoia Captial.

“We are very pleased with this vote of confidence in Santur, the market, and our ability to execute to the requirements of our growing customer base.” said Dr. Richard Craig, CEO of Santur Corporation. “With this funding Santur is fully prepared to meet our customers rapidly ramping production schedules.”

About Santur Corporation
Headquartered in Fremont, California, Santur Corporation is the leading manufacturer of high-performance tunable lasers for metro and long-haul WDM systems. The company’s patented DFB-array technology enables the fabrication of broadly tunable sources at the same performance and costs as fixed wavelength sources. Santur’s products have set a new standard in the industry with their unique combination of high-power achieved without the use of a semiconductor optical amplifier (SOA), wide tunability with no possibility of mode hops, stability in harsh environments, Telcordia GR-468 reliability and high value. For more information, visit www.santurcorp.com, call 1-(866)-TUNABLE, or e-mail marketing@santurcorp.com.

Contact:
Gurinder Parhar
Santur Corporation
P: (510) 933-4100, ext. 226
F: (510) 656-7563
E-mail: marketing@santurcorp.com